octet

In music, an octet is a musical ensemble consisting of eight instruments or voices, or a musical composition written for such an ensemble.

1. any group of eight, esp eight singers or musicians. 2. a piece of music composed for such a group.

An octet is a group of eight singers or musicians.

The Octet for wind instruments is a chamber music composition by Igor Stravinsky, completed in 1923. Stravinsky's Octet is scored for an unusual combination of woodwind and brass instruments: flute, clarinet in B♭ and A, two bassoons, trumpet in C, trumpet in A, tenor trombone, and bass trombone.

Referring to the octet rule, atoms attempt to get a noble gas electron configuration, which is eight valence electrons. Sodium has one valence electron, so giving it up would result in the same electron configuration as neon. Chlorine has seven valence electrons, so if it takes one it will have eight (an octet).

Optical coherence tomography angiography (OCTA) is a non-invasive imaging technique which can be used to provide three-dimensional visualization of perfused vasculature of the retina and choroid [1, 2].

Usually an “octet of electrons” refers to the outer shell of valence electrons (ones of the highest energy level) being stabilized with 8 valence electrons. As I stated, this gives the element a stable shell and usually decreases its reactivity.

The octet rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds.

The octet rule states that each atom should have 8 valence electrons to be satisfied.

1. First, determine the number of electrons from lone pairs and bonds to the atom.
2. Second, confirm that the added up number of valence electrons is 8, or 2 for hydrogen.

The octet rule is a general rule in chemistry used to predict the bonding between atoms. It states that atoms are at their most stable when they have eight electrons in their outer shell, giving them the electron configuration of a noble gas.

What is the Octet Rule? The octet rule dictates that atoms are most stable when their valence shells are filled with eight electrons.

The octet rule aids in finding out how atoms will combine. The octet rule is helpful in terms of deriving chemical structures. For example, the octet rule will help you draw the molecular structure of CH. It helps in predicting the stability and reactivity of the chemical structures.